Tool for dressing emery-wheels



O.E.ROBERTS.

TOOL FOR DRESSING EMBRY WHEELS.

(No Model.)

yV/TNESSEL?! m: cams PETERS co. Puorau'mm WASHINGTON, a. c.

UNITED STATES PAT NT OFFICE.

CHARLES E. ROBERTS, OF OAK PARK," ILLINOIS.

TOOL FOR DRESSING EMERY -WHEELS.

SPECIFICATION forming part of Letters.Patent N0. 602,1Q6, dated April12, 1898. Application filed A t 12,1897. Serial No. 647,999. (No model.)

. Park, in the county of Cook and State of Illinois,have invented a newand useful Improvement in Tools for Dressing Emery-Wheels,

of which the following is a specification.

This invention relates to tools for dressing and truing emery-wheels. Itbelongs to that class of such devices generally known as the Huntingtondressers, and consisting of a series .of disks loosely journaled upon acommon shaft or pivot and some or all provided with peripheral spurs andsupported in the end of a handle, whereby the disks may be held upagainst the wheel to be dressed.

My object in the invention is to produce a tool whereby emery-wheels canbe dressed with greater rapidity and with better results thanheretofore. To this end I provide the tool with two sets of dressers soarranged thereon that both may be brought to bear upon the same part ofthe wheel at the same time, one set being thus adapted to remove anyimperfections in the work done by the other. One set of the dressers mayalso vary from the other in character or in the relative positioning ofthe plain rim-disks or in the fine ness of the teeth used upon thespur-disks.

The nature of the, invention is fully set forth below and is alsodisclosed'in the accompanying drawings, in which latter Figure 1 is aside, Fig. 2 an edge, and Fig. 3 an end, view of my present improvement.

In said drawings, A represents the handle or lever of the dresser,bifurcated atits end, as shown, to give room to the spurreddressing-wheels B and plain disks 0. In the present case the bifurcatedend is also widened in a direction at right angles to the axis of thewheels and disks, so as to give room also to a second set of dressingdevices 13. The two sets of dressing devices are arranged so they willstand one over the other in the same vertical plane when the tool is inuse, so that both sets can be used at the same time upon the same zoneor part of the emery-wheel, if desired, the handle being provided withthe usual shoulder A -at each edge, adapted to set against the rest uponthe grinder-machine and enable the user to hold the tool steadily in itsoperating position. Both sets are loosely mounted on pivots D, supportedin parallel positions in the handle.

As will be seen from the drawings, the two sets of dressers differ fromeach other mainly in the presence in one set of the plain disks 0 andthe absence of such disks in the other set. In this manner one set isadapted to take ofi small asperities left by the other, and each setacts to correct imperfections in the work of the other. 7 The tool isalso adapted to work more rapidly than the old style of Hunt-- in gtondresser and without adding to the labor imposed upon the workman, andthese results are obtained without adding to the tool anything whichprevents the use of either set of dressers singly, so that if theworkman so de- Sires he can still use the tool in the old wayingtonemery-dresser, the handle of which is both bifurcated and widened, andis provided with two sets of dressing devices supported upon parallelpivots, and with a shoulder A under each set of the dressing devices,substantially as set forth.

2. As a new article of manufacture, a Huntington emery-dresser, thehandle of which is both bifurcated and widened, and is provided with twosets of dressing devices supported upon parallel removable pivots, andwith a pivot-keeper E acting upon both-pivots, substantially asspecified.

oHARLES E. ROBERTS.

Witnesses:

L. E. CURTIS, H. M. MUND Y.

